Paving joint and method of making the same



Oct. 19,1926. 1,603,506

E. L. BENEDICT ET AL PAVING JOINT AND METHOD OF MAKING THE SAME FiledApril 8. 1920 3n vcn l'om @wwq 15M 35x3 CZMg Fatented @ct. l9, W260snare EDWARD L. BENEDICT AND ROBERIF L. GLOSE, F PITTSBURGH,JPENNSYLVANIA, AS-

SIGNORS 0F ONE-THIRD T0 HARRY ID. BEATON,

Vania.

Application filed April 8,

Figures 1 and 2 are sectional views showing different forms of ourimproved joint;

Figure 3 is a perspective view of still another form; and 5 Figure 4 isa detail sectional view illustrating the form of material which weprefer to employ in the manufacture of the joint.. Our invention hasrelation to paving joints. One object of the invention is to provide ajoint which islongitudinally corrugated, in such a manner as tointerlock with the adjacent paving material at the sides of the joint,thereby acting to prevent the relative movement of such material in avertical direction adjacent to the joint.

A further object of the invention is to provide a paving joint which isconstructed of materials which render the joint permanently resilient,so that it will act efficiently as an expansion and contraction joint.

' A still further object of the'invention is to provide a joint whichcan be preformed before being placed in the paving. Other objects andadvantages of our invention will hereinafter appear. y j

. Although with respect to that feature of our invention which has forits object the provision of a corrugated interlocking joint, the jointmay be formed of any usual or suitable material, we prefer to constructa joint of a fibrous material, such. as wood pulp, and to shape thejoint from a sheet of this material and to then impregnate it with asuitable filler which will remain permanently resilient orsemi-resilient. Asphalt or creosote, for instance, may be used for thisfiller, these substances not only being waterproof but capable ofpermanently retaining their 'plasticit or resilience.

In making a joint tromvthis material, the strip 2, which is to form thejoint, may be cut from a sheet of the fibrous material of the characterindiacted at 3 in Figure 4. If

a straight or non-corrugated joint is to be v used, as shown in Figure4, this strip is then impregnated in any well known manner with theasphalt, creosote or other similar substance, and is then ready for use.If a corrugatedjoint is to be employed, as shown at- 4: in Figure 2, thecut strip, preferably before-I'impregnating, is longltudinallycorrugated, as shown in Figures? and 3, although the corrugations maytake various forms.

ravine rorn'r .ann METHQD or Maxine 'rnn SAME. 1-

CE EHILADELJPHIA, PENNSYL- 1920. Serial No. 372,145.

- After being corrugated, the formed strip is then impregnated with theasphalt, creosote or other material. and is then ready for use. InFigure 2, I have also shown the strip as provided with a backing plate5, at one' acter has been found to very effectively cooperate with thefibrous material and act as a reinforce therefor adding both strengthand resiliency to the joint.

The corrugations, as will be readily understood, act to form aninterlock which will effectively prevent any relative vertical movementof the paving bodies adjacent to the joint. Where thebacking plate isutilized, the strength of the interlock is increased. I

By the use of material, such as above described, we provide a jointwhich will per- 'manently maintain its elastic or resilient character,and which can be completely preformed before it is placed in position inthe paving, The fibrous material can be shipped in oar-load lots to thepoint of use, without crating; and the strips constituting the joints,can be cut and formed at or adjacent to the place where they are to beused, if desired.

The term corrugation or corrugated,

as employed throughout the specification and claims is definitive of anyconstruction by means of which the main body of the material isdisplaced to one side or the other to form an interlock.

We claim:

1. The herein described method of making paving joints, which consistsin forming a body or strip or fibrous material of proper shape toconstitute the desired joint, and then impergnating the same with afiller of permanently elastic character, substantially as described. v

2. The herein described method of making paving joints, which consistsin providing a body or strip of fibrous material of proper shape toconstitute the desired joint,

corrugating the said strip longitudinally thereof, and then impregnatingthe same with a waterproof filler of permanent elastic character,substantially as described.

3. An expansion and contraction joint for concrete paving, comprising athick stifi corrugated sheet of fibrous material impregnated with apermanently resilient filler and in direct contact with the concretewith at least its upper portions, substantially as de- IO scribed.

45. An expansion and contraction joint for v re oatoe concrete paving,comprising a thick stiff corrugated sheet of fibrous materialimpregnated with a permanently resilient filler and in direct contact'With the concrete, substan tiglly throughout its height and on both its$1 es.

In testimony whereof, We have hereunto set our hands.

' EDWARD L. BENEDICT. EoBEET E. GLOSE. I

